Abstract: An ultra-long silver nanowire material and a fabrication method thereof are provided. The fabrication method includes the following steps: step 1: adding a reducing sugar and polyvinylpyrrolidone (PVP) to deionized water to obtain a clear solution; step 2: mixing the clear solution with a metal ion solution to obtain a mixed solution A; step 3: mixing the mixed solution A with a halide solution to obtain a mixed solution B; step 4: adding a silver ion-containing solution dropwise to the mixed solution B to obtain a reaction solution and conducting a reaction at 110° C. to 130° C. for 14 h to 20 h to obtain a flocculent product; and step 5: subjecting the flocculent product to sedimentation washing with deionized water and absolute ethanol successively to obtain the ultra-long silver nanowire material. The fabrication method of the present disclosure is low in cost, environmentally friendly, and conducive to industrial production.

Abstract: A method for operating a user device adapted to transmit data in a communications system in which available resources are divided into contention resources and non-contention resources includes selecting a first non-contention resource from the non-contention resources in accordance with selection information, the user device configured to transmit data on the first non-contention resource, determining a contention resource from a first plurality of contention resources associated with the first non-contention resource, in accordance with an association between the first plurality of contention resources and the first non-contention resource is known by the user device and a network node in the communications system, and transmitting a message on the contention resource, wherein the message initiates a random access procedure to obtain access to the selected first non-contention resource.

Abstract: A method for operating a user device adapted to transmit data in a communications system in which available resources are divided into contention resources and non-contention resources includes selecting a first non-contention resource from the non-contention resources in accordance with selection information, the user device configured to transmit data on the first non-contention resource, determining a contention resource from a first plurality of contention resources associated with the first non-contention resource, in accordance with an association between the first plurality of contention resources and the first non-contention resource is known by the user device and a network node in the communications system, and transmitting a message on the contention resource, wherein the message initiates a random access procedure to obtain access to the selected first non-contention resource.